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Technology of Network & Communication
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554-560

UAV secure communication optimization design under probabilistic line-of-sight air-ground channels

Xu Yuxuan1
Cui Miao1
Zhang Guangchi1
Chen Wei2
1. School of Information Engineering, Guangdong University of Technology, Guangzhou 510006, China
2. Guangdong Institute of Environmental Geology Exploration, Guangzhou 510080, China

Abstract

This paper considered the physical-layer security of information transmission in an unmanned aerial vehicle(UAV) multi-user communication system, where a UAV communicated with multiple users on the ground, with the presence of an eavesdropper on the ground trying to intercept the confidential information sent from the UAV to the users. It modeled the channels between the UAV and all ground nodes as more accurate probabilistic LoS(line-of-sight) channels. This paper studied maximizing the minimum average secrecy rate of all users by jointly designing the 3D trajectory of the UAV and the user scheduling, under the constraints of UAV fight conditions and the discrete user scheduling parameters. To solve the optimization design problem for the UAV secure communication system under the probabilistic LoS channel model, this paper first decoupled it into three sub-problem, then solved the three sub-problems one by one, by using the integer relaxation and successive convex approximation methods, and finally obtained the 3D flight trajectory of UAV by using the block coordinate descent method. Based on the instantaneous channel state information obtained during the UAV's flight, it further proposed a real-time optimization algorithm for UAV speed and user scheduling. This algorithm formulated the optimization problem into a linear programming problem and solved it by using the interior point method. Simulation results show that compared to the existing benchmark algorithms, the trajectory optimization of UAV based on the probabilistic LoS channel model can significantly improve the secrecy rate of the system, and the proposed real-time optimization algorithm for speed and user scheduling can further improve the secrecy rate performance.

Foundation Support

广东省科技计划资助项目(2022A0505050023,2022A0505020008)
广东特支计划资助项目(2019TQ05X409)
智慧城市物联网国家重点实验室(澳门大学)开放课题项目(SKL-IoTSC(UM)-2021-2023/ORPF/A04/2022)

Publish Information

DOI: 10.19734/j.issn.1001-3695.2022.05.0308
Publish at: Application Research of Computers Printed Article, Vol. 40, 2023 No. 2
Section: Technology of Network & Communication
Pages: 554-560
Serial Number: 1001-3695(2023)02-040-0554-07

Publish History

[2022-08-29] Accepted Paper
[2023-02-05] Printed Article

Cite This Article

徐煜轩, 崔苗, 张广驰, 等. 概率视距空地信道下的无人机安全通信优化设计研究 [J]. 计算机应用研究, 2023, 40 (2): 554-560. (Xu Yuxuan, Cui Miao, Zhang Guangchi, et al. UAV secure communication optimization design under probabilistic line-of-sight air-ground channels [J]. Application Research of Computers, 2023, 40 (2): 554-560. )

About the Journal

  • Application Research of Computers Monthly Journal
  • Journal ID ISSN 1001-3695
    CN  51-1196/TP

Application Research of Computers, founded in 1984, is an academic journal of computing technology sponsored by Sichuan Institute of Computer Sciences under the Science and Technology Department of Sichuan Province.

Aiming at the urgently needed cutting-edge technology in this discipline, Application Research of Computers reflects the mainstream technology, hot technology and the latest development trend of computer application research at home and abroad in a timely manner. The main contents of the journal include high-level academic papers in this discipline, the latest scientific research results and major application results. The contents of the columns involve new theories of computer discipline, basic computer theory, algorithm theory research, algorithm design and analysis, blockchain technology, system software and software engineering technology, pattern recognition and artificial intelligence, architecture, advanced computing, parallel processing, database technology, computer network and communication technology, information security technology, computer image graphics and its latest hot application technology.

Application Research of Computers has many high-level readers and authors, and its readers are mainly senior and middle-level researchers and engineers engaged in the field of computer science, as well as teachers and students majoring in computer science and related majors in colleges and universities. Over the years, the total citation frequency and Web download rate of Application Research of Computers have been ranked among the top of similar academic journals in this discipline, and the academic papers published are highly popular among the readers for their novelty, academics, foresight, orientation and practicality.


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